Intravascular distal protector
A protector and remote technology, applied in the field of medical devices, can solve the problems of thrombus falling off, large size, and affecting blood supply to remote tissues, and achieve the effect of convenient operation and small size
Active Publication Date: 2008-11-19
APT MEDICAL HUNAN INC
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Problems solved by technology
[0003] There are two main types of distal protection devices in the prior art: one is a distal balloon protection device, such as Percuserge of Medtronic and Naviballoon of Kaneka, which is a guide wire with a balloon at the front end. The balloon is opened in the center to effectively prevent the solid particles from flowing away; however, while preventing the solid particles from flowing away, it also blocks the blood flow, affecting the blood supply of the distal tissue, and causing ischemic necrosis of the distal cells when the operation takes a long time
The other is an umbrella filter with a filter membrane, which covers the filter membrane on an umbrella support, such as Johnson & Johnson's AngioGuard, Boston's Filter Wire EX, Guidant's Accunet, and Abbott's Embo Shield; The advantage of this protector is that it can not only collect solid particles, but also allow blood to flow through and maintain blood flow. When the size is large, it is easy to cause the thrombus to fall off, and the protector cannot play its role
Method used
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The intravascular distal protector of the present invention includes three parts: a distal protection device, a delivery device and a recovery device. The delivery catheter is used to help doctors exchange guide wires and the placement of the distal end protector of the blood vessel, and the recovery catheter is used to recover filtered debris. and impurities.
[0031] Such as figure 1 and figure 2 As shown, the distal protection device includes a guide wire rod 1, and the distal end of the guide wire rod 1 is connected with a protection basket 2, and the guide wire rod 1 passes through both ends of the protection basket 2 to form a sliding connection with the protection basket 2, and the guide wire The end of the rod 1 is provided with a guide wire head 3 . The protective net basket 2 is composed of a filter screen 4 and a casing 5 connecte...
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Abstract
The invention discloses a remote protector in the vessel, which is characterized by the following: setting convergent braided basket with netting along radial direction; assembling screw rod in the basket with netting along axle; making screw rod pierce two ends of basket with netting to connect basket with netting glidingly; fixing anchor point on the screw rod to limit screw rod in the basket with netting.
Description
technical field [0001] The invention relates to a medical device, in particular to a distal protection intravascular device for interventional treatment of blood vessel stenosis or other operations that may cause distal blood vessel embolism. Background technique [0002] At present, interventional methods are often used in the treatment of vascular stenosis, such as balloon dilation, rotary cutting, thrombus extraction, stent implantation, etc. During the operation, plaque and blood clots will break and fall off, resulting in emboli. These emboli will be carried away by the blood flow, enter the terminal (distal) end of the blood vessel along the direction of the blood flow, block the distal vascular system, and block arterial blood from entering the brain, heart or other vital organs. This embolism can lead to cerebral infarction, Myocardial infarction, pulmonary embolism, and even death. The intravascular distal protector is a medical device used to collect solid particl...
Claims
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IPC IPC(8): A61B17/22A61B17/94A61L31/02
Inventor 成正辉韩永贵
Owner APT MEDICAL HUNAN INC